InterSystems IRIS TSQL Code 15405 Cannot use the reserved user or role nam

In this post, you’ll learn about the SQL error code 15405 in InterSystems IRIS database the reason why you are receiving the TSQL message when using the InterSystems IRIS data platform

Error Code :

15405

Reason for the Error code 15405 in InterSystems IRIS DBMS

Cannot use the reserved user or role name ‘%s’.